Hoisting-bucket.



5'. Moms. HOISIING BUCKET. APPLICATION FILED APR 5, I916- Patented June 5, 1917 3 SHEETS-48557 I E. E. BROSIUS.

HOISYING BUCKET.

APPLICATION men "01.5.1916- r B M E! E- BROSIUS. 'HQISTING BUCKET- umpcmow FILED mus, 191s.

Patented J une 5, 1917.

3 SHEETS-SHEET 3;

-w @MW EDGAR IE. BROSIUS, 0F PITTSBURGH. PENNSYLVANIA.

Hors'rmG-ntrcnn'r.

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Specification of Letters Patent. Pat-rented June 52, lllllltio Application filed April 5, 1916. Serial No. 8 9,051.

To all whom it may concern:

lie it known that I, Enonn E. Bnosius, a citizen of the United States, residing at llittsburgh, Allegheny county Pennsylvania, have invented a new and useful lmprovcmcnt in Hoisting-Buckets, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is an end view of a hoisting bucket embodying my invention, with the bucket sections in their open positions.

Fig. if is a detail view showing a modification of aportion of the bucket structure. Fig. 2 is a similar view showing the bucket sections closed, and

Fig. 3 is a side viewwith the bucket sections closed. a

My invention has relation to hoisting buckets of the clam shell type; and is more particularly an improvement upon the bucket described and claimed in my Patent No. 1,087,105, dated February 17, 1914.

The bucket of the present invention re tains all of the advantages of the bucket described and claimed in said patent, and is designed to possess certain further advantages, viz.; increased closing leverage on the bucket sections; a simple and eliicient arrangement' whereby the suspension rope or cable is also made to operate as anequalizmgdevice for preventing too violent openmg of the bucket and for taking up shocks;

-. andan improved stop and guard arrangement-fonlimiting the opening movement of the bucketse'ctionsp p 7 i The general construction of the bucket is in most re spectssimilartothat shown and" described in my 1 said patent, tojwh'ich reterence ismade for a more complete descrip tion. Similar parts in the present drawings are given the same reference numerals as in the said patent. In the present construction I have shown the central transverse lifting rod or shaft (3 as extending continuously 1 across the bucket, the arms 4 of the bucket section2 having their heads 5 rigidly secured to the shaft 6, as indicated at 4*, while the arms of bucket section 2-3 have pivot portions If at their upper ends loosely bearing on said shaft.

The lever member 21 is fulcrumed on the central portion of the rod or shaft 6 between the collar portions 6* of a guard and stop member 6 se ed to sa d s aft.- This memher (3 not only prevents endwise movement of the lever member 21 on the shaft 6, but it also forms a stop for the lever member 21 (as shown in Fig. 1), when the bucket sections reach their full open positionsand the cross-head is lowered to the position shown in dotted lines in said figure. It further acts as a guard to prevent the dirt, or other material upon which the bucket is lowered from being forced up into the working parts on the central portion of the rod or shaft (3. This member 6 also has a projecting arm (3 to which is attached one end of a flexible stop chain 6,.the other end being connected at (i to the bucket section 3. Inasmuch as the arm 6 is rigidly connected to the rod or shaft (3. which turns as the bucket section 2 opens, it will be readily seen that the opening movement will take up the slack of this chain 6, as shown in Fig. 1, the chain being taut when full open position is reached.

lhe dead end portions of the suspending rope or cable 14. instead of being fastened to the members T as in my said patent, after passing around the sheaves 13, are carried up and around sheaves 40 which are journaled to the portions 7. Said dead end portions are then carried dowmvardly and are connected to shackles 41 which are connected to members 42. are shown as consisting of braces connecting the transverse rod or shaft at the upper outer corner of the bucket section 3 with the lifting rod or shaft 6. This connection of these members to the lifting rod 6 is not. however. essential, since said members may be in the nature of crank arms extending fro the rod or shaft 9 as shown at 42* in Fin". 1' In this form, the members 42 are secured tothe bucket section, and are rigidly engaged with the rod 9.

In the opening movement of the bucket it will be readily seen that the points 43 where the shackles 41 areuconnected to the member 42 will describe an are about the centers 9, thereby exerting an increasing closing pull on the sections 2 and 3 as the latter open. This leverage action'rapidly increases toward the closcof the opening movement, and is suilicient to prevent any shocks which would otherwise occur. The connections described act in a similar manner to the chains 18 of my said patent; but the present arrangement obviates the necessity for these chains and enables the same re ult to be ob? tained by the rope or cable 14. Furthermore,

the carrying of the dead end portions of this rope or cable upwardly over the sheaves 40, which are almost directly above the hitin rod 6, and thence downwardly to the points of attachment at 43, gives a very greatly increased closing leverage on the h bucket sections.

The points of connection of the shackles 4 1 with the members 42 may be changed so as to give the desired amountof leverage: The leverage will rapidly increase as these points of connection are moved toward the lifting rod 6.

The general operation of the bucket is as I described in'my said patent.

I claim:

I .4 1. A hoisting bucket comprising a central lifting m'ember,bucket sections swung about the axis of said member, a cross head movable to "position above and adjacent to the Ii'ftin member, coiiperating latch means carried. y the crosshead and by the lifting member, a toggle device connected to the lifting member, bucket sections swung about.

crosshead and to the liftingmember, and a sto member for said to gle' device also car- .rie b. the lifting Inem r, together with a stop 0 ain connected to said'lifting member and with one of the bucket sections, substantially as described. I v

2. A hoisting bucket com-prising a'central the axis of said member, one of said sections being secured to said, member, a crosshead movable to a position above and adjacent to the lifting member, coiiperatin latch means carried by the crosshead and y the lifting member, and a stop chain connected to the lifting member and to one of the bucket secs ti'ons, substantially as described.

3. A hoisting bucket, comprising a central,

lifting member, two bucket sections swung at their upper inner corner portions about the axis of said member, link members pivotally connected ,attheir lower ends with the upper outer corners of said sections and with each other at their upper. ends, a cross-head over the-lifting member and movable vertically towardand away from the same, latch means for connecting the cross-head to the lifting member, and a flexible suspension member connected at its end'to one of the bucket sections at a point to cause an increasing pull directly upon said suspension member throughout at least the major portion of the .lifting substantially as described. 7

opening movement of the bucket sections, i

4; A hoisting bucket comprising a central 7 ried around the 'sheaves on the crosshead' and thence upwardly over the sheaves I carried on said frame, and thencedownwardly and connected at their ends to. one of the bucket sections at points which'cause an increasing pull directly on said' suspension member during the opening movements of the bucket sections, substantially as de- "scribed. j p

5. A holsting bucketcomprlsmg acentral l ftlng member, bucket sections carried thereby, a jointed frame to which the bucket sections are pivoted, a crosshead, latch means for engaging the ci'osshead w th the lifting member, sheaves carried by the.

crosshead, other sheaves carried by said frame above the cros shead, "and a flexible suspensionmcmber having its dead end portions carried around the sheaves on the crosshead and thence upwardly over the sheaves carried on said frame, and thence downwardly and connected at their ends to oneof the bucket section's, said section having inwardly projecting members at its upper corner portions to which said ends are connected, substantially as described;

6. A'hoisting bucket comprisinga central lifting member, buck'et sections carried thereby, a jointed frame to 'which the bucket sections-are pivoted, a crosshead, means for engaging the cros'shead with the lifting membenand a suspension member engaging the crosshead and having its end portions connected with one of the bucket sections so that the rojpe itself acts. as a shock absorber 1 for the bucket sections, substantially as de-.

Gno. B. BLEMING,

GEO. HJPARMELEE. r r

scribed. V

In testimony whereof, I have hereunto set my hand. p n

EDGAR E. B'RQSIUS.

Witnesses: 

